"Mon Chi Chi" wrote in message ...
How can I lower PH in my indoor garden. I am at around 7.0 and I want to get
to about 5.9 for my tomatoes. I have used aquarium product before but found
it to be expensive. I am not sure what product to use that will not harm my
plants as they are for human consumption...

mon


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The common method is with agricultural sulfur or with aluminum
sulphate.
A decent soil rich in organic materials such as leaf mold will
probably do fine with no ammendment.